Stave-machine



,UNITED STATES PATENT OFFICE..

JAMES W. ADAMS, OF PLEASANT VALLEY, VERMONT.

STAVE-MACHINE.

Speccaton of Letters Patent No. 27,607, dated March 27, 1860.

To all whom 'it may concern:

Be it known that I, J AMES IV. ADAMS, of Pleasant Valley, in the countyof Chittenden and State of Vermont, have invented a new and ImprovedMachine for Dressing Staves; and I do hereby declare that the followingis a full, clear, and exact description of the same, reference being hadto the annexed drawings, making a part of this specification, in which-Figure l is a side sectional view of my invention, taken in the lineFig. 3. Fig. 2 is a transverse vertical section of the same taken in theline gf, y, Fig. 1. Fig. 3 is a plan or top view of t-he same.

Similar letters of reference indicate corresponding parts in the severalfigures.

This invention consists in the employment or use of concave and convexstationary knives, pressure rollers, and a reciprocating bed, operatedin a novel way, and the whole arranged for joint operation,substantially as hereinafter shown and described, whereby staves may bedressed at both sides by a very simple, economical and compact machine.

To enable those skilled in the art to fully understand and construct myinvention I will proceed to describe'it.

A represents a rectangular frame which may be constructed in any properway to support the working parts of the machine, and B is the drivingshaft which is fitted transversely in the frame, A, has a fiy, C, at oneend, and a pinion, D, at the opposite end, the pinion, D, gearing into awheel E, on a shaft, F, the inner end of which is provided with apinion, G.

In the upper part of the frame, A, a bed, H, is placed. This bed isfitted at its sides in suitable grooves or guides, a a', both of whichare shown in Fig. 2, and to the center of the bed a longitudinal pendentboard, I, is attached, said board extending the whole length of the bed,and having a horizontal ledge or flanch, Z), at its lower end. To theflanch, Z), two uprights, c, c, are attached, one near each end, saiduprights being secured at their upper ends to the bed, H. On theuprights, c c, a bar, J, is fitted, said bar being allowed to rise andfall freely on the uprights, which serve as guides for the same. Thebar, J, has a rack, K, attached to it at one side, said rack beingtoothed both at its upper and lower sides, the teeth at the lower sidebeing opposite the spaces between the teeth at the upper side as shownin Fig. 1.

Against one end of the bar, J, andion its i upper face a spring, L,bears and a similar spring, M, bears against the under surface of thebar at its opposite end.

On the upper surface of the frame, A, there are placed pressure rollers,N, O, P, P. The roller, N, has its journals fitted in fixed bearings,but the roller, O, has its journals fitted in bearings which areattached to springs, d, CZ. The rollers, P P, have their journals fittedin fixed bearings.

On the bed, H, a supplemental bed, Q, is placed, said bed res-ting onsprings, e e, to allow it` a vertical yielding movement. The bed hasvertical guide rods, f, attached to it, which rods pass through the bed,H, and keep the bed, Q, in proper position. To the upper part of theframe, A, and between the two rollers, P P, a knife, R, is permanentlyattached. This knife has an upper concave surface. To the frame, A,between the rollers, N, O, a knife, S, is permanently attached saidknife having a convex upper surface. To the bed, I-I, directly below therollers, N, O, and knife, S, a supplemental bed, T, is attached having aconvex upper surface in its transverse section.

In the frame, A, at one side of the board, I, there are secured twosprings, V, which project inward toward the board, I, and within thepath of the movement of proj ections, g, attached to the board, J. Oneof the springs and a projection are shown in Fig. 2.

The operation is as follows: The staves to be dressed are rived or sawedout of proper dimensions by any of the machines used for such purpose,and motion is given the shaft, B, by any convenient power. As the shaft,B, rotates a reciprocating movement is communicatedjto the bed, I-I, inconsequence of the pinion, G, gearing into the rack, K, of bar, J. Thepinion, Gr, works into the top and bottom of rack, K, moving the sameand bar, J, alternately up and down as it acts at its ends, the spring,M, favoring the elevation of the rack, and the spring, L, itsdepression. A stave is first placed on the supplemental bed, Q, when thesame is Inoving in the direction indicated by arrow 1, and said stave ispassed underneath the rollers, P P, and knife, R, the latter cutting theupper and inner surface of the stave transversely in concave form. Atthe return motion the stave is placed on the convex bed, T, concave sidedown, which side correlll i the rollers, P P, may therefore be fixed.

The supplemental bed, T, however being rigid the roller, O, isnecessarily yielding. The roller, N, is permanent and of concave formlongitudinally, so as to conform to the dressed surface of the stave,and serve to discharge the same from the machine, The machine, it willbe seen, dresses a stave at both sides at every complete vibration ofthe bed, H, that is to say at every forward and backward movementcombined, the inner concave sides being dressed when the bed moves inthe direction indicated by the arrow 1, and the convex sides beingdressed when the bed moves in the direction indicated by arrows 2-seeFig. 3. The springs, V, serve to give an impetus to the bed, H, at thecommencement of each charge of its movement, and thereby facilitate theoperation of the pinion and rack.

I do not claim separately any of the within described parts, but

Having thus described my invention what I claim as new, and desire tosecure by Letters Patent, is

The reciprocating bed, H, operated by the pinion, G, and movable rack,K, and the supplemental yielding and rigid beds, Q, T, in connect-ionwith the concave and convex knives, R, S, and pressure rollers, N, O, P,P, all being arranged for joint operation as and for the purpose setforth.

JAMES W. ADAMS.

Witnesses:

C. G. SMITH, D. C. THOMPSON,

